<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <!-- 准备好一个容器，用于让react渲染 -->
  <div id="test"></div>

  <!-- 引入react 核心库 -->
  <script src="../js/react.development.js"></script>
  <!-- 引入react-dom，用于支持react操作DOM -->
  <script src="../js/react-dom.development.js"></script>
  <!-- 引入babel，用于将jsx转化为js -->
  <script src="../js/babel.min.js"></script>

  <script type="text/babel"> //此处一定要将JavaScript 改为 babel， 让babel 翻译标签中的代码
    //定义组件（函数式组件)
    function demo(){

    }
    //渲染组件到页面
  </script>

</body>
</html>